CWE-1232 Improper Lock Behavior After Power State Transition

Register lock bit protection disables changes to system configuration once the bit is set. Some of the protected registers or lock bits become programmable after power state transitions (e.g., Entry and wake from low power sleep modes) causing the system configuration to be changeable.

• Access Control: Modify Memory

• [Architecture and Design, Implementation, Testing] • Security Lock bit protections should be reviewed for behavior across supported power state transitions. • Security lock programming flow and lock properties should be tested in pre-silicon and post-silicon testing including testing across power transitions.